We found this sophisticated meter circuit in an article in Radio Electronics magazine from June 1959. The article taught how to assemble it. Transistors are common types at the time.
This circuit was found in the November 1992 issue of Radio Electronics magazine. It uses...
This multivibrator has its frequency controlled by a crystal. Other frequencies can be generated by...
We found this preamplifier circuit with high input resistance, on the order of 30 M ohms, in an...